Kenwood NX-420 K Service Manual page 43

Transmitter Section
Item
Panel tuning mode
1. High power 1) Adj item: [HPWR]
(Batt: 7.5V) Adjust: [
2) Adj item: [H.PWR_]
[H.P.W.R._.] [H.PWR_]
(TA) [H.P.W.R._.](TA)
Adjust: [
PTT: ON
Press [ ] key to
store the adjust-
ment value.
2. Low power 1) Adj item: [LPWR]
(Batt: 7.5V) Adjust: [
2) Adj item: [L.PWR_]
[L.P.W.R._.] [L.PWR_]
(TA) [L.P.W.R._.](TA)
Adjust: [
PTT: ON
Press [ ] key to
store the adjust-
ment value.
3. Balance *2 1) Adj item: [BAL]
Adjust: [
Deviation meter
LPF: 3kHz
HPF: OFF
2) Adj item: [B.AL_ _]
[B.A.L._._.] [B.AL_ _]
(TA) [B.A.L._._.](TA)
Adjust: [
PTT: ON
Press [ ] key to
store the adjust-
ment value.
[Side1] key: Press
while transmitting to
change 20Hz and
2kHz.
20Hz: "–" not appears
2kHz: "–" appears
*2: Refer to the "Necessary Deviation adjustment item for each signaling and mode" table on page 49.
Balance adjustment is common with the adjustment of all signaling deviations.
4. Maximum 1) Adj item: [NDEV]
Deviation Adjust: [
(NXDN) *3 Deviation meter
LPF: 3kHz
[Narrow] HPF: OFF
2) Adj item: [N.DEV_]
[N.D.E.V._.] [N.DEV_]
(TA) [N.D.E.V._.](TA)
Adjust: [
PTT: ON
Press [ ] key to
store the adjust-
ment value.
ADJUSTMENT
Condition
PC test mode
equipment
1) Adj item: [High Power meter
.] Transmit Power] Ammeter
2) Adj item: [Low],
[High], [Low(TA)],
[High(TA)]
.] PTT: Press
[Transmit] button.
Press [Apply All]
button to store the
adjustment value.
1) Adj item: [Low
.] Transmit Power]
2) Adj item: [Low],
[High], [Low(TA)],
[High(TA)]
.] PTT: Press
[Transmit] button.
Press [Apply All]
button to store the
adjustment value.
1) Adj item: [Balance] Deviation
.] Deviation meter meter
LPF: 3kHz Oscilloscope
HPF: OFF
2) Adj item: [Low],
[High], [Low(TA)],
[High(TA)]
PTT: Press [Trans-
.] mit] button.
Press [Apply All]
button to store the
adjustment value.
[2kHz Sine Wave
Check box]: Check
while transmitting
change to 2kHz.
1) Adj item: [Maximum Deviation
.] Deviation (NXDN meter
Narrow)] Oscilloscope
Deviation meter
LPF: 3kHz
HPF: OFF
2) Adj item: [Low],
[High], [Low(TA)],
.] [High(TA)]
PTT: Press [Trans-
mit] button.
Press [Apply All]
button to store the
adjustment value.
Measurement
Test-
Unit Terminal Unit
Panel ANT Panel [Panel
Panel ANT Panel [Panel
Panel ANT Panel [Panel
NX-420
Adjustment
Specifi cations /
Parts Method
3.0W ±0.2W
tuning 2.0A or less
mode]
Selector [PC test mode]
Press [Apply All]
[PC test button to store the
mode] adjustment value
[ ],[ ] after all adjustment
points have been
adjusted.
1.0W ±0.1W
1.1A or less
[PC test mode]
Press [Apply All]
button to store the
adjustment value
after all adjustment
points have been
adjusted.
The Deviation of 2kHz Tone deviation
tuning 20Hz frequency is is within ±1.0% of
mode] fi xed. Change the 20Hz tone devia-
Selector 2kHz adjustment tion.
value to become
[PC test the same deviation [PC test mode]
mode] of 20Hz within the Press [Apply All]
[ ],[ ] specifi ed range. button to store the
adjustment value
after all adjustment
points have been
adjusted.
3056Hz 2995~3117Hz
tuning Write the value as
mode] followings. [PC test mode]
Selector 513 (Reference Press [Apply All]
value) button to store the
[PC test adjustment value
mode] after all adjustment
[ ],[ ] points have been
adjusted.
Remarks
43